<p>
This node allows you to customise the formatting depending on the properties of the reference being cited.
</p>
<p>
e.g. To show the volume number <em>only</em> if the document type is article-journal:
</p>
<ol>
	<li>1. Use the "+" add node button at the top left to add an "if" node</li>
	<li>2. Edit the "if" node to say "The document type is article-journal"</li>
	<li>3. Within the "if" node, add a "number" node and set it's variable to "volume"</li>
</ol>
